Tube Holder Dual Variable Flow, only Back Catalog number: 800073 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800066-10 Tube Holder Collar Clip, for 1/4" OD, 1/8" ID Tubi Price on request 800075 Tube Holder Quad Variable Flow, only Price on request 800165-10 Sorbent tube adapter nipple for Dual manifold High Price on request